English verb conjugation COULD BURN

Regular verb: burn - burned - burned

Affirmation

Simple form

I could burn
you could burn
he could burn
we could burn
you could burn
they could burn

V-ing form

I could be burning
you could be burning
he could be burning
we could be burning
you could be burning
they could be burning

Perfect

I could have burned
you could have burned
he could have burned
we could have burned
you could have burned
they could have burned

V-ing perfect

I could have been burning
you could have been burning
he could have been burning
we could have been burning
you could have been burning
they could have been burning

Negation

Simple form

I couldn't burn
you couldn't burn
he couldn't burn
we couldn't burn
you couldn't burn
they couldn't burn

V-ing form

I couldn't be burning
you couldn't be burning
he couldn't be burning
we couldn't be burning
you couldn't be burning
they couldn't be burning

Perfect

I couldn't have burned
you couldn't have burned
he couldn't have burned
we couldn't have burned
you couldn't have burned
they couldn't have burned

V-ing perfect

I couldn't have been burning
you couldn't have been burning
he couldn't have been burning
we couldn't have been burning
you couldn't have been burning
they couldn't have been burning

Interrogative form

Simple form

could I burn?
could you burn?
could he burn?
could we burn?
could you burn?
could they burn?

V-ing form

could I be burning?
could you be burning?
could he be burning?
could we be burning?
could you be burning?
could they be burning?

Perfect

could I have burned?
could you have burned?
could he have burned?
could we have burned?
could you have burned?
could they have burned?

V-ing perfect

could I have been burning?
could you have been burning?
could he have been burning?
could we have been burning?
could you have been burning?
could they have been burning?

Interro-negative form

Simple form

couldn't I burn?
couldn't you burn?
couldn't he burn?
couldn't we burn?
couldn't you burn?
couldn't they burn?

V-ing form

couldn't I be burning?
couldn't you be burning?
couldn't he be burning?
couldn't we be burning?
couldn't you be burning?
couldn't they be burning?

Perfect

couldn't I have burned?
couldn't you have burned?
couldn't he have burned?
couldn't we have burned?
couldn't you have burned?
couldn't they have burned?

V-ing perfect

couldn't I have been burning?
couldn't you have been burning?
couldn't he have been burning?
couldn't we have been burning?
couldn't you have been burning?
couldn't they have been burning?

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